Dairy machinery.



T. UMRATH.

DAIRY MACHINERY.

. APPLICATION FILED FEB. 23, 1909. I 1,010,32 Patented N0v.28, 1911.

I T. UMRATH. DAIRY MACHINERY APPLICATION FILED FEB. 23, 1909.

Patented Nov. 28, 1911.

5 BHBETS-SHEET 2.

T. UMRATH.

DAIRY MACHINERY.

APPLIOATION FILED FEB. 23, 1909 Patented Nov. 28, 1911.

5SHEET$-SHEET 3.

T. UMRATH. DAIRY MACHINERY.

APPLICATION FILED 11:13.23, 1909.

1,010,328. v Patented Nov. 28, 1911.

6 SHEETSSHEET 4.

@m m M,

T. UMRATH.

DAIRY MAGHINEEY.

APPLICATION FILED FEB. 23, 1909.

1,010,328, Patented Nov. 28, 1911.

5 SHEETSSHEET 5.

- F To all iohorat-t may UNITED STATES PA' ENT OFFICE.

THEODORE umm'rn, or CHICAGO; ILLINOIS, Ass GNoR '10 LIBERTY cow COMPANY, or HAMMOND, INDIANA, A CORPORATION or INDIANA.

DAIRY MACHINERY.

v (concur-n: Be it known. I, II-TEODORE. UMRATH, a citizen of the United States, residing at Chicago, in;..the:jco'unty 0..,;cook' and State of Illinois, have'invented new and useful Improvements 1n DairyiMachinery, of which the follow is a f 'full, clear, concise, and exact description, reference being had to the accompanying drawing, forming" apart of this specification.

This invention relates to improvements in milking machines,fthe object ofthe invention being the general improvement of machines of this type.

In an application filed by me June 27th, 1908, Serial No. 440,609,and in a second application filed December 19th, 1908, Serial No. 468,304, I have shown milking machines of the general type of those shown in the present application, and the present inventions are in the nature of additional improvements on said machines. p

In the accompanying drawings, Figure 1 is a front view of the milking machine, with the lower portion thereof in vertical section; Fig. 2 is a view similar to Fig. 1, but looking at the machine from one side; Fig. 3 is a sectional view through the lower part of a modified form of machine; Fig. 4 is a view similar to Fig. 3, but showing another modification; Fig. 5 shows an improved form of apparatus for heating milk to a sterilizing temperature during its passage to the receptacle of the machine; Fig. 6 is a fragmentary view of a detail of construc tion relating to the apparatus shown in Fig. 5; Fig. 7 shows a modified form of apparatus in which a rotary air pump is used instead of the reciprocatin form shown in Figs. 1 and 2; and Fig. 8 1s a view showing the milking machine attached on a trolley.

In my earlier applications, above identified, I have shown milking machines in which the operation of extracting the milk is performed by a machine mounted on the cover of a receptacle, and in one instance the machine has been shown as provided with means for heating the milk to a sterilizing or pasteurizing temperature while on its records of the milk production of the different cows.

I have found that inspractice it is usually consideredmore desirable to be able to ascertain the. total amount of butter fat yielded by each'cow than to be able to determine the amount, of milk derived from each. cow. Some cows give a small quantity of milk which is very rich in butter fat, while others give a much larger quantity of milk, but of such poor quality that the amount of butter fat is'less than that given by the cows which give less milk.

Experience milk has just been extracted from the cow, and while it remains at the bodily temperature of the cow, it very readily takes up germs of various kinds, and that these germs multiply with great rapidity while the milk chines hereinafter described the milk is not allowed to come in the barn into contact with the air at any time until after it has well as heated and cooled.

In the form of machine shown in Figs. 1 and 2, I employ a main frame 10' mounted on a base .11, which forms the cover for and fits air-tight upon the upper edge of a suit able receptacle. J ournaled'in suitable bearings in the frame 11 is a crank-shaft 12 operating alternately a pair ofwacuum pumps 13, 13. The shaft 12 has also a crank 14, which is connected by means of a rod 14 with a structure 15 having a rack or series of teeth along each of its vertical sides. This frame 15 is reciprocated vertic'ally during the operation of the machine and the rack teeth engage suitable pinions 16, 16,

double pulsator 17 similar in general contrated in my former application, Serial No. 408,304.

The crank-shaft 12 is revolved by an electric motor 18, which is suitably supported u on the frame 11 and carries upon one end of its shaft a pinion 19, connected to the crank-shaft by a suitable train of reducing gearing inclosed in a housing 19. On the opposite end of the motor shaft is a pulley 18 connected by means ofa belt 20'with a second pulley 21. This pulley 21 is mounted on a shaft 22 which turns in a suitable bearbeen separated into cream and skim milk, as

Specification of Letters Patent. 7 Patented Nov, '28, 1911.=2 s pn atian filed February 23, 1909. serial No. 479,396.

has demonstrated that when i remains at this temperature. In the ma- I each of which is mounted on the shaft of a struction and operation to the pulsator illusing 22 and extends through the-wall of and into the interior of the receptacle 23. Upon the inner end of this shaft is arranged one of the members 24 of a worm-gear, the other member 25 of which is mounted upon the upper end of the revolving spindle 26 of a cream separator 27, which may be of any approved form and need not be herein described in detail.

Arranged within the upper part of the receptacle 23 is a small receptacle 28 which is connected by means of a float valve 29 anda' tube 30 with the separator 27. The

milk passes through a filter 28 before it reaches the receptacle 28. The skim milk 1 from the separator 27 discharges through a tube '32 into the receptacle 23, while the I cream-finds its way to the exterior of the receptacle 23 and into a removable can 33- through a tube 34 containing valves 35 and 36. A'separable coupling 34 in the pipe 34 provides means whereby after the valves 35 and 36 have been closed, the can 33 con:

- taining the cream may be disconnected from I for marketing.

the-machineand taken to the cooling room of the dairy. An empty receptacle may then be substituted in place of the one that has been taken away, and after the coupling 34 graduations, whereby the amount of liquid in thecan may be learned-by reading the graduation at the level at which the cream stands.

In older that the temperature of the cream may be known, the can 33 is provided with a thermometer '38 havingv its bulb within the'can and its graduated portion extending therefrom. The temperature of the skim milk may also be determined by reading a thermometer 39, the bulb of which is located within the receptacle 33 and the graduated portion of which extends to the exterior of said receptacle. A glass sight tube 40 is arranged vertically'on the receptacle 23, by inspection of which" the height of'theskim milk in the'receptacle may be determined. The separator 27 is inclosed in a small compartment of its own, formed by a partition 41, and is supportedin position in said compartment by suitable means such as brackets 42 and 42 g For the purpose of raising the temperature of the milk to a point somewhat h1gher tion 28".

than the bodily temperature of the cow, as is desirable in some cases in order that the separator may work with its greatest efii-,

ciency, the pipe 30 which concluctsthe-milk to the separator is surrounded by an electric heating coil 43, this portion of the pipe 30 and the coil 43- being contained in asultable tank 44 which is preferably filled with a liquid in order that the heat given ofl by the coil 43 will be equally distributed over the pipe 30.

In Fig. 3 I have shown a machine in the cal partition 23. The shaft 22 is j ournaled in bearings 23, 42*and operates two wormgears 24, which intermesh with pinions 25 on the spindles 26 of separators 31.

In the upper portionof the receptacle 23 is locatedv a smaller receptacle 28, as in the form of machinealready described, this re-' ceptacle being however, in this form of the machine, divided intotwo parts by a parti- Float valves 29 control the how of milk from the compartments of the receptacle 28 to the separators. In this .formv of the machine means are provided whereby the cream and skim milk are heated to a sterilizing or pasteurizing temperature after the process of separating the milk-has been .completed. This is done by arranging heating coils, designated 43,- around the discharge tubes-31 of the separators and similar heating coils 43 around the disrators to the removable'receptacles or cans '33. The valves 35-and 36 illustrated and described in connection with the machine shown in Figs. 1 and 2 are likewise pro- .vided on this machine.

It is well known that centrifugal cream separatingmachin'es work. with greater effitemperature as high as, or slightly higher than that of the body of the cow. In the use of my improved milking machine I am enabled to conduct the, milk to the cream separator without the loss of any percepticharge tubes 31 which lead from the sepaa ciency if the milk is supplied thereto at a ble amount of the heat which it possesses when taken from the cow and -I am, therefore, able to so completely separate the butter fat from the skim milk that scarcely any butter fat will be 'left in the skim milk.

I have found in practice that centrifugal cream-separating devices, when operated exposed to the open air, have to overcome considerable friction from the air. By operating the separators in a vacuum I am enabled to materially reduce the power required.

.VVhen cream separators are operated in as the cream and skim milk issue from the -discharge spouts into pails or other open receptacles, it very readily takes up germs from the air. r

In my milking machine I am able to take the milk from the cow, separate the same into skim milk and cream, and sterilize either or both of the products, all without the possibility of the milk or cream coming into contact with the atmosphere, and there fore with no opportunity to take up bacteria or impurities, such as dust. also, if desired, to keep the milk of each cow separate from that of all the others sothat not only may a record be kept of the produc{ tion of each'cow, but the milk from any single cow may be subjected to bacteriological or such other tests as may be desired.

In the form of machine which is shown in Fig. 4, a form of pulsator difiering from that shown in my former applications is employedand is designated 45. This form of pulsator is operated automatically by vacuum, and is well known in the milking machine art. In this machine I have also substituted for the pair of reciprocating vacuum pumps shown in my earlier appli cations for exhausting the receptacle, other means consisting of a small rotary air pump- 46 connected by meansof a tube 48 with the cover 11. The shaft of the motor 18 is connected at one end to the rotating part of said pump, and upon the opposite end of said- Shaft is mounted the pulley 18, driving the belt 20 for operating the separator, as in the bove described.

form of machineshown in Fig. 3 and herein- In the form of machine shown in Fig. 7 the style of pulsa-tor shown in Figs. 1 and 2 is retained, but the rotary form of pump 16 is employed inplace of thereciorocating pump. For operating .the pulsators from the shaft of the motor, a suitable train of reducing gearing 49 is provided.

5 By heating the milk-before separation to a temperature slightly above the bodily temperature. 'Ofl I IB-KZOW, the extraction of the butter fat from the milk may, in some in? stances, be more completely elfected. In this case the devi'ceshown in Fig. 5 may be utilized, either in combination with the -means shown in Figs. 1 and 2 or alone.

When thedevice of Fig. 5 is to be used, it is placed upon the receptacle 23 and is secured in position thereon by means of suitable clamps 50. The milking machine proper is then placed in position upon the top of the heating device and is secured in position thereon by clamps 51.: This device I am enabled comprises a tank 52 having in its upper portion two compartments 53 and 5st pro 'vided with filters 53, 54*, intowhich the milk is discharged from the milking machine proper when in position on the top of the receptacle 52. Leading from each compartment is a tube 56, these tubes extending side by side in a spiral path through the tank and discharging through the bottom thereof into the receptacle 23. Arranged between the tubes 56, and extending parallel therewith, is a'tube 57, in which is arranged an electric heating rheostat connected by means-of wires 58 and 59 to asuitable source of supply of electric current.

The'tank 52 is preferably filled with a liquid, I

ature of the contents of the tank rises above a a givenpoint. This circuit includes a relay or other suitable means for automatically opening the circuit of theheating apparatus upon the completion of the local circuit through the thermostat. By this means, when the temperature of the contents of the tank becomes too high, the automatic switch such time as the temperature falls below a certain predetermined point-,whereupoll the circuit will be reestablishedand current will flow through the heating rheostat- A glass 'sight tube 61 extendsvertically on the side I of the of thetank 52, showingtheheight liquid in the tank. 1 I

In the usejof centrifugal cream separators it has been fo und that in order to operate successfully the spindle of the machine must bexinan absolutely Verticalposition. I have found that if my machine be suspended from some suitable support it will, by its own weight, be balanced so as to hang absolutely vertical. Furthermore, as by "so suspending the machine it is kept out of all contact with the floor of'the stable, it isthus maintained in a cleaner andmore sanitary condition than if resting upon 'the floor. Another ad- ,vant-age of suspending the machine in this 1113111191 isthat it ls mposslble for the machine to be tipped over if a cow should come too close to the machine. For convenience in handling the machine, I may arrange upon the upper portion of thef ame thereof a trolley wheel 62 which runs on a track (33 suspended by suitable means and extending through the stable behind the cows. By the use of this trolley svstem the machine may be run alongthe trolley from the stable to the dairyroom after the operation of milking two cows has been completed, where the removable cans 33 may be taken off and is opened and the current is out ofli u11til I others substituted. The machine will then be 1 I milking run back along the trolley into the stable and attached to two other cows, the flexible conductors leading. from the motorbeing then attached by means of a suitable plug toan electric socket connected in a system of wiring, carrying a current of proper voltage to. operate the motor. The operations of the cows, separating the milk and sterilizing the same will proceed at one time, and when the milk has been all extracted from these two cows the electric attachment plug will be withdrawn from the socket, the milking tubes of the machine will be detached from the cows and the machine will be again run out along the trolley to the dairy room. By thus proceeding no part of the interior of the machine or'the receptacles is ever exposed to the atmosphere in the stable; thus contaminatibn of the milk by the dust in suspension in the air of the stable can never'occur. By the use of this improvement it is,made possible to furnish -milk to the .consumer under the mostsanitary conditions that can possibly be attained in practice.

secured to it a trolley wheel 62, arranged to travel upon a suitably supported wire, 63,

. whereby the machine may be readily trans 30 v ported fromone position to another, simply by moving it along on the wire support. I Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is: T 1

1. The combination with a portable-receptacle, and means carried by said receptacle.

for separating cream from milk, of exhaust 1 mechanism for producing a partial vacuum tachment with a milk tube, said separating. .means being arranged to receive the m1lk in said. receptacle, and a milk duct discharginginto said receptacle and adapted for atdischarged from the milk duct within the vacuous receptacle.

2. The combination with a portable receptacle, and means carried by said receptacle for separating cream from milk, of exhaust mechanism for producing a partial vacuum in said receptacle, a milk duct discharging into said receptacle and adapted for at .tachment witha milk tube, saidseparating means'bein'g arranged to receive the milk discharged from Jthe'milk duct within the vacuous receptacle, and operative connections between the exhaust mechanism and separating means, whereby the separatlng means may operate, synchronously with the exhaust mechanism.

3. The combination with a portable receptacle having a removable cover, and.

means within the, receptacle for separating cream from milk, of exhaust mechanism mounted, on saidcover for producing a par- I tial vacuum in said receptacle, 9. milk duct discharging into said receptacle and adapted In Fig. 8 the machineis shown as having for attachment with a milk tube, and a conduit,within said receptacle for conveying the milk discharged from the milk duct to the separating means. I v

4. The combination with a portable recep' tacle having a' removable cover, and means within the receptacle for separating cream from milk, of exhaust mechanism moimted an auxiliary can'supported on the outer side I of the receptacle for receiving the cream,

and a conduit extending from the separat ing means to the can, ofexhaust mechanism for producing a partial vacuum in the receptacle and a milk duct discharging within the receptacle, said separating means being constructed and arranged to receive the milk as it is discharged'trom the milk duct.

6. The combination with a portable milk receiving receptacle, means within said receptacle for separating cream from milk,

an auxiliary can supported on the outer'side oi the receptacle for receiving the cream, a"

connecting conduit between the separating means and the auxiliaryjcan, having a joint therein, whereby the can may be. disconnecte'd from the separating means, and a valve in the connecting conduit, between the separating means and joint, for closing the separating means to the external air, of exhaust mechanism for producing a partial vacuum in the receptacle, and a milk duct discharging within the receptacle, said extracting means being constructed and arranged to receive the milkas it, is discharged from the milk duct.

7. The combination with a receptacle, of milk drawing mechanism; associated there-i with and discharging into said receptacle,

means within said receptacle for separating cream from the-inilk, constructedv and arranged to receive themilk discharged from the milk drawing mechanism, and, means for heating the milk before'its discharge to the interior of said receptacle. v a

8. The combination with a.receptacle, of milk drawing mechanism discharging into said receptacle, means within said receptacle for separating cream from the milk and arranged to receive the milk discharged from the milk drawing mechanism and ,to discharge the cream outside said receptacle,

' discharging the same outside said receptacle;

and means for heating the cream before its discharge to the exterior of said receptacle.

9. The combination with a closed receptacle, of means for exhausting said receptacle, a milk duct discharging into said receptacle, means within said receptacle for separating cream from the milk, a conduit for conveying the milk from the milk duct to the separating means, and a heater surroundmg said condult.

10. The combination with a receptacle, OI

means for exhausting said receptacle, a milk separating cream from the milk and discharging the cream outside said receptacle.

12. The'combination of a receptacle di' vided into two compartments, milk drawing mechanism adapted to milk two cows at once and discharge the milk from each cow.

into a separate compartment, means in each of said compartments for receiving the milk from its associated milk drawing mecha nism, separating cream from the milk and and an operative connection between said milk drawing mechanism and said separating means, whereby the operations of milk drawing and separating are caused to take place. simultaneously.

13. The combination of a receptacle divided into two compartments, milk drawing mechanism adapted to milk two cows at once and discharge the milk from each cow into a separate compartment, means in each of said compartments for receiving the milk from the associated milk drawing mechanism and separating'cream from the milk, an operative connection between said milk drawing mechanism and said separating means, whereby the operations of milk drawing and separating are caused to take place simultaneously,and means in each of said compartments for heating the contents.

,14. The combination "of a receptacle divided into two compartments, milk drawing mechanism adapted to milk two cows at once and discharge the milk from each cow into a separate compartment, and means in each of said compartments for receiving the milk from its associated milk drawing mechanism' and separating cream from the milk, an operative connection between said milk drawing mechanism and said. separating means whereby the operations of milk drawing and separating are caused to take place simultaneously, and means in each of said compartments for heating the milk therein.

15. Dairy machinery comprising milk drawing mechanism, means operativelyconnected therewith for separating the cream from the milk, and a removable container into which said separating means discharges, said container having means whereby it may be detached from the separating means with out the access of air thereto.

16. A milking machine comprising a re ceptacle, means within said receptacle for separating the cream from the milk, an electrically-operated heater upon said receptacle. containinga conduit for thepassage of milk to the separating means, a cover for said heater, and milk drawing mechanism mounted on said cover and arranged to discharge into the milk conduit in said heater.

17. The combination with a receptacle, of a removable heater comprising a tank arranged to be placed upon said receptacle and having compartments adapted to receive milk, milk drawing mechanism arranged to be mounted on said heater andadapted to milk cows and discharge milk from" each cow into a separate compartment, and means for conducting the milk from said tank to said receptacle. 18. The combination with a receptacle, of a removable sterilizer comprising a tank arranged to be placed upon said receptacle and having. compartments adapted to receive milk, milk drawing mechanism arranged to be mounted on said sterilizer and adapted to milk two cows and discharge milk from each cow into a separate compartment, and means for conducting the milk from said tank to said receptacle.

19. The combination with a receptacle, of a tank adapted to be superposed on the receptacle, said tank having two compartments for receiving milk, milk drawing mechanism adapted to be superposed upon said tank and discharging into said. compartments thereof, a pipe leading from each of said compartments of said tank to'said receptaole, and a heating rheostat in said tank for raising the temperature thereof.

20. The combination of a receptacle, a

21. The combination of a receptacle having a plurality of compartments, a heater adapted to be superposed on said receptacle and provided with a plurality of ducts leading therethrough and openinginto said receptacle, milk drawing mechanism arranged to be mounted on said heater, said milk drawing mechanism being adapted to milk a plurality of cows and to discharge the milk from each cow into one of said compartments, and a thermostat arranged to autocommunicating with said compartment, and

a float-controlled valve for regulating the flow of milk from said compartment to said separating means.

23. In a dairy machine,a receptacle, milk drawing mechanismdischarging into said receptacle, means within said receptacle for separating the cream from the milk, a pipe arranged to receive the milk from'the milk drawing mechanism and leading to said separating means, heating means surrounding said pipe, and an operative connection between said separating means and said milk drawing mechanism.

24. In a dairy machine, a receptacle, milk drawing mechanism discharging into said receptacle, means'within said receptacle for separating the cream from the milk, a pipe arranged to receive the milk discharged from said milk drawing mechanism and leading to said separating means, a rheostat surrounding said pipe, and operative connection between said separating means and said milk drawing mechanism.

25. The combination of a receptacle, milk drawing mechanism discharging within said receptacle, means within said receptacle for separating the cream from the milk, a tube leading to said separating means, and means for automatically controlling the flow through said tube.

.26. In a dairy machine, a receptacle, aseparator contained therein, a second receptacle mounted outside thereof and having separable means for connecting the same to said separator, a pair of valves in said connecting means, means for exhausting said receptacle, and a milk duct discharging into the separator.

27. In a dairy machine milk drawing mechanism, a milk receptacle, a heating device constructed and adapted to be placed underneath the .milk drawing mechanism and upon the milk receptacle, and having a conduit for receiving the milk from the milk drawing mechanism and discharging the'same into the receptacle and a thermoing said duct.

-'29. Dairy'machinery comprising a receptacl'e, milk drawing mechanism discharging 'thereinto, means in said receptacle for sep arating the cream from the milk, said separating means having-a conduit arranged to receive'the milk discharged from'the milk drawing mechanism, and having an outlet duct for conveying the cream to the exterior of said receptacle, and means for heating saidfduct;

30. In dairy machinery, milk drawing mechanism, including a milk receiving receptacle, cream separating mechanism within said receptacle and arranged to receive the milk from the milk drawing mechanism,

operative connections between said milk,

drawing mechanism and said cream separating mechanism, and means for heating the skim milk and cream after the same have been separated. r

31. In dairy machinery, milk drawing mechanism, a cream separating device 'arranged to receive the milk froni the milk drawing mechanism within a receptacle sealed from the external air, said' cream separating device being operatively connected with said milk drawing mechanism,

and means for sterilizing the milk and cream within said sealed receptacle.

32. The combination with a receptacle, of a milk heating device mounted thereon and adapted to heat the milk before it reaches the receptacle, a cover, an air exhauster, and. a pulsator both mounted on the cover, and an operative connection between said receptacle and said pulsator.

In witness whereof, I have hereunto subscribed by name in 'the presence of two witnesses.

THEODORE UMRATH.

Witnesses:

CHARLES G. Corn, CHARLES L. HOPKINS. 

